Automatic release-valve



No. 770,646. PATENTED SEPT. 20,1904.

N. R. MAUS. AUTOMATIC RELEASE VALVE.

- APPLICATION FILED MAR. 15. 1904.

NO MODEL. 2 SHEETS-SHEET 2.

UNITED STATES Patented September 20, 1904.

PATENT OFFICE.

AUTOMATIC RELEASE-VALVE.

SPECIFICATION forming'part of Letters Patent No. 770,646, datedSeptember 20, 1904.

i Application filed March 15, 1904. Serial No. 198,318. (Noniodeh) T0 atwhom it may concern:

Be it known that'LNICHOLAS R.MAus,a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Automatic Release-Valves, ofwhich the following is a specification.

This invention relates to an automaticallyoperating release-valve foruse in connection with engine-cylinders; and the primary object of thesame is to provide a device of this class having means which willprevent suction through the valve to the cylinder when steam is shut offfrom the cylinder and engine is still in motion and also to have theoperative elements of the valves so arranged that they will bedouble-acting, and thereby require the use of a single-valve structureonly with each cylinder to arrive at the result sought.

A further object of the invention is to provide a valve of the class setforth having the parts arranged for ready assemblage and to facilitatethe application thereto of connections.

With these'and other objects and advantages in view the inventionconsists of a casing having two lower inlet extensions bored orotherwise formed with valve-receiving seats in which connected valveshaving simultaneou s operation'are arranged, and cooperating with thelatter is a check-valve having a gravitating movement and controllingthe outlet of the steam received in, the improved valve into anatmospheric outlet.

The invention further consists in the details of construction andarrangement which will be more fully hereinafter set forth.

In the drawings, Figure l is a longitudinal vertical section of a valveembodying the features of the invention. Fig. 2 is an end elevation of aportion of the valve. Fig. 3 is a bottom plan view of a check-valve diskplate or limiting means used in connection with the improved device.Fig. 4 is a top plan view of the valve, showing the disk plate removed.Fig. 5 is a bottom plan view of the check-valve.

Similar numerals of reference are employed to indicate correspondingparts in the several views.

The numeral 1 designates a valve-casing having lower extensions 2projecting out- Wardly therefrom and arranged in diametrical alinement,the extremities of said extensions being externally screw-threaded, asat 3, and the terminals having circumferential cavities for facilitatingthe application of pipe connections to said extensions and the formationof ball joints. The extensions are longitudinally bored to form seats 5,which communicate at their extremities by means of reduced passages 6with a central chamber 7, curved shoulders 8 being provided at theintersection of the inner terminals of the seats and the throats. Risingfrom the casing at a point in central relation to the extensions 2 is avertical extension 9, having a bore 10 communicating with the chamber 7and formed with an upper enlargement to provide a seat 11, terminatingat a lower curved shoulder 12. The upper end of the vertical extension 9is externally screw-threaded, as at 13, and extending longitudinallythrough the inner portions of the ends of the extensions 2 and 9 aresegmental steam passages or ports 14. A disk plate or limiting device 15is arranged on the upper end of the vertical extension 9 and is of lessdiameter. than said end. This disk plate or limiting means has an uppercircumferential cavity 16 to facilitate the formation of a ball-joint inrelation to the pipe connection adapted to be secured to the upper endof the extension 9, and said disk plate or limiting means is also formedwith segmental escape openings or outlets 17 and a central stop-.web 18,the opening 17 communicating with the enlargement 11 of the port 10. Thedisk plate or limiting means 15 when applied to'the upper end of theextension 9 closes the upper open terminals of the segmental passages orports 14; but the latter are long enough to establish communicationbetween difierent portions of the en-- largement 11 of the bore when avalve, which will be presently described, cooperating therewith is incertain positions.

Slidably mounted in the seats 5 are valves 19, havinginwardly-projecting stems 20, and extending centrally through bothvalves and stems thereof are bores 21 to receive a coup ling-bolt 22,having a head 23 at one end and securing and jam nuts 24 and 25 on theopposite end. When the valves 19 and their stems 20 are properlyassembled and connected by the bolt 22, the inner ends of the stemsclosely abut against each other, and the proportions and distancebetween the valves is so determined primarily that when one valve is inclosed position the other will be open, and as both valves are firmlyattached they will have a simultaneous operation equally in oppositedirections. The stems 20 of the valves are materially less in diameterthan the throat 6, and to facilitate the operation of the valves, aswell as to lighten the same, they are cored out or recessed from theirouter faces inwardly, as at 26.

'A check-valve 27 is arranged in theenlargement or seat 11, forming partof the bore 10, and has adepending winged stem 28 movable in said boreand comprising intersecting wings to form angular passages 29, asclearly shown by Fig. 5. The upper face of the valve 27 is alsocircumferentially recessed, as at 30, to lighten the same, and extendingupwardly from the center of the said valve is a stop projection 31,which is adapted to contact with the lower face of the web 18 of theplate or limiting means 15. By the use of this limiting-plate the upwardmovement of the valve is restricted, said valve being permitted to risehigh enough to clear the lower extremities of the passages or ports 14.when the said check valve is subjected to pressure. When the valve isfree of o perating-pressu re, it will gravitate and close against theshoulder 12. The pipe connection, which is adapted to be applied to theupper end of the extension 9, will communicate with the atmosphere or astack, and the pipes, which are attached to the extensions 2, willcommunicate with opposite extremities of an engine-cylinder and alsowith means for feeding steam to the opposite ends of the valve from aboiler to properly dispose the dual valve to permit the exhaust-steamfrom opposite ends of a cylinder to which it may be connected to passtherethrough and escape through the actuation of the check-valve intothe atmosphere.

When an engine embodying a cylinder to which the improved valve isattached is in operation and steam passes into one end of the cylinder,the valve at the right, for instance, will be simultaneously affected bysuch steam-pressure from the boiler and assume a closed position andsimultaneously open the valve at the left ready to receive the steamthat remains in the cylinder after. the main engine-valve exhausts, thisexhaust passing into the extension. The exhaust passing into theextension through and around the valve at the left will enter thechamber 7 through the adjacent throat 6 and raise the checkvalveand passout through the ports 14 and plate or limiting means 15 into a stack orthe opposite end of the cylinder, and this operation becomes successiveand regular until the steam is shut ofl from the cylinder.

The passage of the steam through the improved valve causes a draft to beset up in the stack if the valve is attached to the latter, and by meansof such draft the fire in the furna ce will bebenefited and steam morequickly and'plentifully generated. Furthermore, the operation of theimproved valve overcomes any tendeney to the institution of backpressure in the cylinder after the steam has been used and is exhausted,and during the operationof exhausting the steam from the cylinder bymeans of-the improved valve one valve. will remain open the full lengthof the stroke. of a piston in the cylinder or until steam is admitted tothe end of the cylinder opposite that primarily receiving the steam.Further more, the gravitating check-valve obstructs any tendency tosuction or back pressure by immediately returning to its seat or toclosed position when the exhaust is completed. This is a materialadvantageand is beneficial to the mechanism cooperating with the enginecylinder.

It is preferred to construct the several parts of the valve withcast-brass and to have the coupling-bolt 22 formed of soft steel. Itwill be understood, however. that other metals may be employed. Inaddition to the advantages of creating a draft in a stack by the use ofa valve the latter will be also beneficial in saving cylinder-oil andfuel. It will also be understood that changes in the proportions,

dimensions, and minor details may be resorted to without departing fromthe spirit of the invention.

Having thus described the invention, what is claimed as new is- 1. In adevice of the class set forth, the combination of a casing, a dual valveautomatically operating in the lower part of the casing and having asingle connecting means, and a check-valve movable in planes at rightangles to and at a distance from the dualvalve.

2. In a device of the class set forth, the combination of a casinghaving diametrically-opposed inlets, a dual valve operating inconjunction with said inlets and having a single connecting means, and acheck-valve arranged at an angle to the dual valve, both valves havingan automatic operation and the stem of the check-valve being always at adistance from the connecting means for the dual valve.

3. In a device of the class set forth, the combination of a valve-casinghaving diametrically-opposed inlets formed with valve-seats, and anangular extension also formed with a seat, all the seats having portstherearound communicating therewith, two valves operating in connectionwith the first-mentioned seats and having a single connecting means, anda check-valve mounted in the extension, the latter communicating withthe inlets and having its stem at all times at a distance from theconnecting means'of thesaid two valves.

L. In a device of the class set forth, the combination of a casinghaving lower diametrically-opposed extensions forming inlets andprovided with seats, a vertical extension communicating with the inletsand also having a seat at its outlet end, the extensions adjacent to allthe seats being provided with ports arranged therearound, valvesslidably mounted in the seats of the inlet extensions and connected forsimultaneous operation, and a check-valve automatically slidable in thevertical extension and having a winged stem always located at a distancefrom the connecting means for the valves mounted in the inletextensions.

I 5. In a device of the class set forth, a valvecasing havinginlet-terminals provided with seats and an outlet-terminal also having aseat, valves slidably mounted in the seats of the inlet-terminals andconnected for simultane-- first-named terminals, all the terminalshaving seats and ports around the said'seats, valves in the seats of theinlet-terminals having inwardly-extending stems, a bolt extendingthrough the valves in the inlet-terminals to connect the same forsimultaneous operation, and an automatically-operating check-valve inthe outlet-terminal having a winged stem always located at a distancefrom the inwardlyextending stems of the valves in the inletterminals.

7. In adevice of the class set forth, the combination of a casing havinglower inlet-terminals provided with seats and ports, an outletterminalhaving a seat and ports, the outletterminal communicating with theinlet-terminals, connected sliding valves arranged in the seats of theinlet-terminals, a slidable checkvalve in the seat of theoutlet-terminal, and means for limiting the movement of the saidcheck-valve.

8. In a device of the class set forth, the combination of a casinghaving lower extensions provided with seats and ports, and throatsleading to a central chamber, an angular and vertical extensionbetween-said lower extensions having a bore communicating with the saidchamber, and an upper seat and ports, a dual slide-valve mounted in theseats of the lower extensions, a check valve slidably mounted in theseat of the vertical extension and having a winged stem, and a limiting--plate on the upper end of the vertical extension provided with openingstherethrough, and a stop means to engage a part of the valve in thevertical extens1on.

In testimony whereof I afiix my signature in presence of two witnesses.

' NICHOLAS R. MAUS.

Witnesses:

MARY EWERTS, PETER EWERTS.

